Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction

碩士 === 國立臺灣科技大學 === 化學工程系 === 105 === In this work, nanoflower-like ternary CuxSnSy (CTS) semiconductor were synthesized by a novel solvothermal approach. Based on the point of view of Cu-Sn-S phase diagram, atomic ratio and crystal strcture can be changed by tuning sulfur molar ratio of CTS during...

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Main Authors: Hua-Sheng Chang, 張華生
Other Authors: Yian Tai
Format: Others
Language:zh-TW
Published: 2017
Online Access:http://ndltd.ncl.edu.tw/handle/42515153579399972453
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spelling ndltd-TW-105NTUS53420182017-10-31T04:58:51Z http://ndltd.ncl.edu.tw/handle/42515153579399972453 Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction 調變銅錫硫三元化合物之硫含量應用於高效率可見光二氧化碳還原與轉換之研究 Hua-Sheng Chang 張華生 碩士 國立臺灣科技大學 化學工程系 105 In this work, nanoflower-like ternary CuxSnSy (CTS) semiconductor were synthesized by a novel solvothermal approach. Based on the point of view of Cu-Sn-S phase diagram, atomic ratio and crystal strcture can be changed by tuning sulfur molar ratio of CTS during the procedure of synthesis. In order to ensure that CTS can be applied on carbon dioxide reduction reaction, the nanoflower-like CTS powder will be identified by some optical analysis to define its band gap and band edge. On the other hands, from the results of composition, crystal structure and other analysis can found that in the case of low sulfur condition is easier to produce secondary phase copper(I) sulfide (Cu2S) which can enhance CTS system to produce C1 product: methanol (CH3OH). Moreover, sulfonic group (SO3H) can appear in someparameter, which can be a proton donor and proton hoppingto help acetaldehyde (CH3CHO) to convert to ethanol (C2H5OH). In optimization ofthis study, it was found that CTS215(Cu:Sn:S = 2:1:5) after 300oC annealing treatment have the most suitable size of the nanoflower-like structure, it can produce three different products including methanol, acetaldehyde and ethanol, its quantum efficiency also can achieve 0.0471%. In the future, followed by the annealing treatment, surface area control, crystal orientation control of CTS photocatalyst might be a good way for further development of carbon dioxide reduction. Yian Tai Kuei-Hsien Chen Li-Chyong Chen 戴龑 陳貴賢 林麗瓊 2017 學位論文 ; thesis 141 zh-TW
collection NDLTD
language zh-TW
format Others
sources NDLTD
description 碩士 === 國立臺灣科技大學 === 化學工程系 === 105 === In this work, nanoflower-like ternary CuxSnSy (CTS) semiconductor were synthesized by a novel solvothermal approach. Based on the point of view of Cu-Sn-S phase diagram, atomic ratio and crystal strcture can be changed by tuning sulfur molar ratio of CTS during the procedure of synthesis. In order to ensure that CTS can be applied on carbon dioxide reduction reaction, the nanoflower-like CTS powder will be identified by some optical analysis to define its band gap and band edge. On the other hands, from the results of composition, crystal structure and other analysis can found that in the case of low sulfur condition is easier to produce secondary phase copper(I) sulfide (Cu2S) which can enhance CTS system to produce C1 product: methanol (CH3OH). Moreover, sulfonic group (SO3H) can appear in someparameter, which can be a proton donor and proton hoppingto help acetaldehyde (CH3CHO) to convert to ethanol (C2H5OH). In optimization ofthis study, it was found that CTS215(Cu:Sn:S = 2:1:5) after 300oC annealing treatment have the most suitable size of the nanoflower-like structure, it can produce three different products including methanol, acetaldehyde and ethanol, its quantum efficiency also can achieve 0.0471%. In the future, followed by the annealing treatment, surface area control, crystal orientation control of CTS photocatalyst might be a good way for further development of carbon dioxide reduction.
author2 Yian Tai
author_facet Yian Tai
Hua-Sheng Chang
張華生
author Hua-Sheng Chang
張華生
spellingShingle Hua-Sheng Chang
張華生
Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction
author_sort Hua-Sheng Chang
title Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction
title_short Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction
title_full Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction
title_fullStr Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction
title_full_unstemmed Tuning sulfur molar ratio of ternary CuxSnSy (CTS) as an efficient solar fuels photocatalyst for CO2 reduction
title_sort tuning sulfur molar ratio of ternary cuxsnsy (cts) as an efficient solar fuels photocatalyst for co2 reduction
publishDate 2017
url http://ndltd.ncl.edu.tw/handle/42515153579399972453
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